Modified block textures to make them more realistic
Delete some unnecessary jumping code
Modify dirt generation, now its thickness is variable
Fix #5
Fix #6
Remove barrier at the top of the world
Add breaking delay to blocks, depending on type. Barrier is unbreakable (Fix #4)
Add breaking animation. Modify breaking mechanism (breaking time is no longer kept).
Modify world generation, now has more stone
Modify directory structure (group images in a folder)
Update CHANGES and README for commit
Merge pull request #7 from SuperF22/development

version pre-alpha-140702a